A molecule of cyanoethene (acrylonitrile) has the structure shown below.
Which of the following shows the correct structure of a section of a poly(cyanoethene) molecule containing three repeating units?
−CH=C(CN)−CH=C(CN)−CH=C(CN)−
-\text{CH}=\text{C}(\text{CN})-\text{CH}=\text{C}(\text{CN})-\text{CH}=\text{C}(\text{CN})-
−CH=C(CN)−CH=C(CN)−CH=C(CN)−
−CH(CN)−CH(CN)−CH(CN)−CH(CN)−CH(CN)−CH(CN)−
-\text{CH}(\text{CN})-\text{CH}(\text{CN})-\text{CH}(\text{CN})-\text{CH}(\text{CN})-\text{CH}(\text{CN})-\text{CH}(\text{CN})-
−CH(CN)−CH(CN)−CH(CN)−CH(CN)−CH(CN)−CH(CN)−
−CH2−CH(CN)−CH2−CH(CN)−CH2−CH(CN)−
-\text{CH}_2-\text{CH}(\text{CN})-\text{CH}_2-\text{CH}(\text{CN})-\text{CH}_2-\text{CH}(\text{CN})-
−CH2−CH(CN)−CH2−CH(CN)−CH2−CH(CN)−
−CH2−C(CN)2−CH2−C(CN)2−CH2−C(CN)2−
-\text{CH}_2-\text{C}(\text{CN})_2-\text{CH}_2-\text{C}(\text{CN})_2-\text{CH}_2-\text{C}(\text{CN})_2-
−CH2−C(CN)2−CH2−C(CN)2−CH2−C(CN)2−
Polymers Questions
Practise Edexcel GCSE Chemistry Polymers with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.